A Practical Approach for Producing Hydrophobic and Elastic Aerogels by Ambient Pressure Drying

Abstract:

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Hydrophobic and elastic aerogels derived from methyltrimethoxysilane (MTMS) precursor were prepared by ambient pressure drying under various processing conditions, and their morphology and physical and mechanical properties were characterised and evaluated. The results of this study demonstrated that for inherently hydrophobic gels like MTMS based gels, high temperature ageing is a practical and effective means to reduce volume shrinkage and produce low bulk density monolithic aerogels at ambient pressure, without the need of any solvent exchange and surface modification. By using this simple method, we were able to produce an aerogel with a bulk density as low as 0.064g/cm3. The results also revealed a significant difference from that previously reported in the literature.

Info:

Periodical:

Advanced Materials Research (Volumes 343-344)

Edited by:

David Wang

Pages:

205-211

DOI:

10.4028/www.scientific.net/AMR.343-344.205

Citation:

J. Y. Cai et al., "A Practical Approach for Producing Hydrophobic and Elastic Aerogels by Ambient Pressure Drying", Advanced Materials Research, Vols. 343-344, pp. 205-211, 2012

Online since:

September 2011

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Price:

$35.00

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